Dtc 30087 Overvolt - Yale 524150797 Maintenance Manual

ELECTRICAL SYSTEM
POSSIBLE CAUSE
A. HIGH VOLTAGE AT CONTROLLER TERMINALS
B. CONTROLLER WIRING FAULT
C. FAULTY CONTROLLER
COMPONENT OPERATIONAL CHECK
NOTE: Always check battery condition and state of charge before performing electrical troubleshooting. A faulty
or low charged battery will cause electrical features to not operate as designed and give incorrect readings while
performing electrical tests.
PROCEDURE OR ACTION:
1. Conduct a visual inspection of all connectors/wiring associated with the fault code.
Are any faults detected/observed?
YES: Repair/replace connector or wiring associated with faults found. Refer to the appropriate Electrical
System YRM.
NO: Proceed to Step 2.
2. Re-key the vehicle.
Is the code still present?
YES: Disconnect battery and discharge the capacitor. Connect battery and re-key the vehicle prior to perform-
ing Cause A.
NO: Problem may be intermittent.
CAUSE A - HIGH VOLTAGE AT CONTROLLER TERMINALS
PROCEDURE OR ACTION:
1. Measure voltage between B(-) at the controller and FU1 (above controller).
Is voltage above 26 Vdc?
YES: Ensure battery is rated at 24V and is properly connected to the truck.
NO: Proceed to Cause B.
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
Please refer to the end of this procedure for supporting diagrams.
DTC 30087
OverVolt
NOTE
Diagnostic Trouble Codes
9030-20-41